Humans currently spend 3 billion worth of time per week playing video games. Most of these games are purely for entertainment, but use video games for education also expanded dramatically. If only a fraction of the time spent to playing video game could be used to studying something else, then it can be changing ones perspective about video game. In here, I was studying about simulation game and development an idea to integrating it with function of components in game engine Unity 3D. I designing a prototype game called "Unity of Code" to see if video games really can be used to studying function of unity 3D components. This prototype is a platformer-simulation game, with main focus on platformer game feature. According to survei that I conduct, this prototype can meet requirement of this research.